Definition:
Transitive verbs (他動詞, tadōshi) take a direct object — an entity that the subject acts upon. Intransitive verbs (自動詞, jidōshi) describe actions or states that the subject undergoes without a direct object. What makes Japanese notable in this domain is a highly developed system of morphologically related transitive-intransitive verb pairs (他動詞と自動詞の対応) — the same lexical concept (open, close, drop, break, etc.) has two verb forms that differ in morphology and in whether the action is volitionaly performed by an agent (transitive) or undergone by a participant (intransitive). These pairs are a major source of learner errors and are grammatically distinct from the English transitive/intransitive distinction.
The Transitive-Intransitive Pair System
In English, the same verb often serves both transitively and intransitively:
- “I opened the window” (transitive) / “The window opened” (intransitive)
In Japanese, these require different verbs:
- 私は窓を開ける (mado o akeru, I open the window) — transitive: 開ける (akeru)
- 窓が開く (mado ga aku, the window opens) — intransitive: 開く (aku)
This distinction is grammatically enforced: using the transitive verb where intransitive is required produces ungrammatical output; using the intransitive where transitive is required loses the agent (which matters for blame, intentionality, etc.).
Common Transitive-Intransitive Pairs
| Meaning | Transitive (他動詞) | Intransitive (自動詞) |
|---|---|---|
| open/be open | 開ける (akeru) | 開く (aku) |
| close/be closed | 閉める (shimeru) | 閉まる (shimaru) |
| put in/enter | 入れる (ireru) | 入る (hairu) |
| take out/come out | 出す (dasu) | 出る (deru) |
| drop/fall | 落とす (otosu) | 落ちる (ochiru) |
| break (tr.)/break (intr.) | 壊す (kowasu) | 壊れる (kowareru) |
| continue (tr.) | 続ける (tsuzukeru) | 続く (tsuzuku) |
| finish (tr.) | 終える (oeru) | 終わる (owaru) |
| connect (tr.) | つなぐ (tsunagu) | つながる (tsunagaru) |
| turn off (tr.) | 消す (kesu) | 消える (kieru) |
| start (tr.) | 始める (hajimeru) | 始まる (hajimaru) |
Morphological Patterns
Several morphological patterns can help predict which verb in a pair is transitive and which is intransitive (these are tendencies, not absolute rules):
| Ending | Typical function |
|---|---|
| -eru (える) | Often transitive: 開ける、閉める、入れる |
| -u / -aru (う/ある) | Often intransitive: 開く、閉まる、始まる |
| -su (す) | Often transitive: 出す、壊す、落とす |
| -reru (れる) | Often intransitive OR passive: 壊れる、離れる |
These patterns have exceptions; ultimately, most pairs must be learned individually.
?/? Particle Usage with Transitive-Intransitive Pairs
Particle choice interacts systematically with transitivity:
- Transitive verb + を (o): 私は窓を開けた — “I opened the window”
- Intransitive verb + が (ga): 窓が開いた — “The window opened”
In Japanese, marking the correct particle with the correct verb in the pair is a core grammatical competence. Errors here are highly salient to native speakers.
Registers and Speaker Responsibility
The transitive-intransitive distinction is also semantically important for speaker responsibility:
- Saying 壊した (kowashita) — “broke it” (transitive) — implies an agent intentionally or accidentally broke something
- Saying 壊れた (kowareta) — “it broke” (intransitive) — removes the agent, implying it broke on its own
In formal or apologetic Japanese discourse, the intransitive form is sometimes used rhetorically to avoid assigning agency/blame — “書類がなくなった” (the documents got lost / became lost) rather than the transitive form.
History
The Japanese transitive-intransitive verb pair system developed from combinatorial morphological processes in Old Japanese (8th–12th centuries). Causative and passive morphology in Japanese interacts with this system. The systematic description of verb pairs as a grammatical category used in Japanese linguistics pedagogy was formalized in 20th-century Japanese linguistics and is now standard in both native and L2 Japanese instruction.
Common Misconceptions
- “Japanese passive = Japanese intransitive” — They are distinct: intransitive verbs describe events without agents; the passive (受け身形) specifically implies an affected subject of an otherwise transitive event
- “The -eru ending always means transitive” — Transitive verbs often end in -eru, but so do some intransitive verbs (帰る, 変える is transitive, 帰る is intransitive despite sounding similar)
Criticisms
- The near-homophony of some pairs (開ける/開く, 続ける/続く) creates significant confusion and cannot be resolved by sound alone — full sentence context is required
Social Media Sentiment
Transitive-intransitive pairs are consistently listed as one of the hardest aspects of Japanese grammar for learners. Many dedicated learning resources and YouTube videos address them. Last updated: 2026-04
Practical Application
- Learn transitive-intransitive pairs together as pairs, not separately — they reinforce each other
- Practice producing sentences with both verbs in the pair to solidify the particle-verb relationship
- Sakubo provides vocabulary in context; reading authentic Japanese helps you see these pairs used naturally
Related Terms
See Also
Research
- Jacobsen, W. M. (1992). The Transitive Structure of Events in Japanese. Kurosio Publishers. — Theoretical linguistic analysis of Japanese transitive-intransitive verb alternations.
- Makino, S., & Tsutsui, M. (1986). A Dictionary of Basic Japanese Grammar. The Japan Times. — Reference grammar with detailed treatment of transitive-intransitive pairs.
- Tsujimura, N. (1996). An Introduction to Japanese Linguistics. Blackwell. — Comprehensive introduction including verb alternations in Japanese grammar.